<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
</head>

<style>

    /*  css层叠性 */
    /* div {
        color: red;
        font-size: 25px;
    }

    div {
        color: pink;
    }

    /* css 继承性 */
    /* .jianlin {
        color: plum;
    }

    #ya {
        color: blue;
    }

    .yase {
        color: green;
    }

    div {
        color: red;
    } */

    /* div {
        color: hotpink !important;
    } */ 




    /* 
    div p { 
         color: green;
    }   
  
     p { 
         color: red;
    } 
  
     .feng {  
        color: blue;
    }  
    */
/* 
    .father  {
        color: green !important;
    }  

    div p {
        color: red;
    }
    
    p {
        color: yellow;
    } */
/* 
    div {
        width: 500px;
        height: 500px;
        background-color: purple;
        background-image: url(../images/l.jpg);
		 background-repeat: repeat;  
         background-position:  10px center; 
        background-repeat: no-repeat;
         background-position: 12px 40px ; 
    } */


    /* body {
         background-image: url(../images/sm.jpg);
        background-repeat: no-repeat;
        background-attachment: fixed;
        background-position: center top; 
        background: #fff url(../images/sm.jpg) no-repeat fixed center top;
    } */

    /* a {
        color: red;
        font-size: 20px;
        width: 100px;
        height: 50px;
        display: inline-block;
        background-color: purple;
        text-decoration: none;
        text-align: center;
        line-height: 50px;
    }

    div > p {
        color:  red;
    } */
</style>
<body>

    <!-- <div>王可可是一条狗</div>

    <div>
        <div class="jianlin">
            <p>王思聪</p>
            <p>王鸿康</p>
        </div>
    </div>

    <div class="yase" id="ya" style="width: 100px; height: 100px; background-color: purple;">
        亚瑟
    </div> -->

    <!-- <div>
        <p class="feng">凤姐</p>
    </div> -->
<!-- 
    <div class="father">
        <p> 儿子 </p>
    </div> -->  

    <!-- <div>
    </div> -->  

    <!-- <p>123123123123123</p>
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	<p>123123123123123</p> -->



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    <div>
		<p>abc</p>
		<p>abc</p>
		<p>abc</p>
		<p>abc</p>
		<ul>
		   <p>123</p>
		</ul>
	</div>
</body>
</html>